Jack F1 is a Dutch crossbreed between Northern Lights, a Skunk F1 and a Mexican Haze. She is the result of a long and arduous selection process to obtain suitable phenos as parents. We took several generations of thorough back-crossing to her original parents to stabilize the strain, allowing further generations to pretty much give identical offspring. This resulted in our Jack F1. She is a 75% Sativa plant with extremely high THC level. Jack F1 has an Indica appearance, but is definitely a Sativa. However, with a short flowering period. Jack F1 is covered in snowy crystals of resin from top to bottom. Stick to advised nutrients, don’t overfeed. Especially during the vegetative period (4 weeks) keep nutrient levels at a minimum. Keep her on a 24/7 schedule during vegging, to limit height. This advise basically goes for any Sativa. Preferably grown in soil or coco with plenty of space. A Sativa dominant plant she will form one giant main cola, so don’t prune her.

Cannabis seeds like a humidity of around 70% during germination and a temperature of around 20-27 degrees. Preferably use a propagator for easy manipulation of temperature and humidity. Germination starts off in the dark and after hatching the seeds are placed in the light. During the growing stage they should have 18 hours of light and 6 hours of darkness. Cannabis seeds can easily be stored for 2 years in a dark and cooled space without losing much of its germination power.